/Engine/Plugins/FX/Niagara/Source/Niagara/Public/NiagaraSystemInstance.h
typedef [TMap](API\Runtime\Core\Containers\TMap)< [EmitterEventKey](API\Runtime\Core\Misc\TTuple), [FNiagaraDataSet](API\Plugins\Niagara\FNiagaraDataSet) * > EventDataSetMap